This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC28070: PFC 芯片Vinac脚在无信号的情况下能持续发驱动波形

Part Number: UCC28070


 最近在测试P2-2样机过程,发现多台样机有100Vac反复开关机不能起机问题,查找为PFC 芯片Vinac脚在无信号的情况下能持续发驱动波形,不符合正常控制逻辑。后更换芯片控制逻辑正常,初步判断为芯片问题